ZEK system house

What ZEK system house does

ZEK Systemhaus is a privately held, manufacturer-independent ITK (IT and communications) system house headquartered in Schlierbach, Baden-Württemberg, Germany, founded in 1993 by Stefan Zimmerer as 'Zimmerer Elektronik' and rebranded to its current name around 2010. The firm operates as a sole proprietorship under VAT-ID DE156756879, employs approximately 10 staff, and serves small and medium-sized enterprises across healthcare, care, retail, trades/crafts, and industrial sectors within the Stuttgart, Esslingen, Göppingen, and Ulm regions. Service delivery is consultative and direct, with customer acquisition driven by referrals and long-tenured repeat relationships.

Name

ZEK system house

Legal name

ZEK Systemhaus

Website

https://zek.de

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Managed IT Services

NAICS

Computer Systems Design Services (541512), Other Computer Related Services (541519)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

IT Operations, Event & Incident Management (NOC/SOC-to-ITSM) (BPAEAJAH)

akta.pro secondary industries

IT Asset Disposition (ITAD) & Secure Data Erasure (BPAEAOAK), ITSM Platform Implementation & Administration (ServiceNow/JSM/BMC/etc.) (BPAEAJAC)

Keywords

• Managed IT services
• IT infrastructure
• Network security solutions
• Cloud telephony services
• SME IT consulting

Headquarters

HQ city

Schlierbach

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. IT Services and Consulting: ZEK provides comprehensive IT services including IT solutions (firewall, antivirus, backup, Microsoft 365, server, monitoring, pen-testing), IT infrastructure (webhosting, networking, hardware/software, UPS), and telecommunications (cloud telephony, internet lines, mobile). Services are delivered via direct sales with personalized consultation. Revenue is generated through project-based services and likely ongoing managed service contracts.
2. Hardware and Software Sales: Sale of computer hardware, peripherals, PC systems (Lenovo focus), notebooks, server systems (Supermicro), and related software from named manufacturers.
3. Google Review Deletion Service: Fee-based service for businesses to remove negative Google reviews. Operates on a pure success basis — customers only pay for reviews that are actually deleted (95% success rate).
4. Web Hosting Services: Web hosting packages with German server locations (Germany and Straßburg/Datadock), 99.9% uptime guarantee, SSD storage, SSL certificates, spam/virus filtering, and optional Sucuri website security. Individualized offers and direct billing.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

ZEK Systemhaus is a manufacturer-independent IT and communications (ITK) system house delivering integrated IT solutions, IT infrastructure, and telecommunications services to small and medium-sized enterprises in the Stuttgart/Esslingen/Ulm region of Germany. The company provides holistic complete packages spanning firewall and managed antivirus, hybrid cloud backup, Microsoft 365, server and network solutions, web hosting, cloud telephony, internet and mobile connectivity, and a specialized Google review deletion service, all backed by personal consultation and a single point of contact.

Product overview

ZEK Systemhaus is a manufacturer-independent ITK (IT and communications) system house offering comprehensive IT services and solutions. The portfolio consists of core IT solutions (Firewall/UTM, Managed Antivirus, VEEAM Backup, Microsoft 365, Server Solutions, Monitoring, Pen-Testing, Time Recording), IT infrastructure services (Webhosting, Business Networks using Ubiquiti UniFi, Hardware/Software procurement, UPS Systems), and telecommunications (Cloud Phone System/Crown Centrex, Internet Lines, Mobile Services). The DocBee ticket system provides unified customer support integrating with internal SAP and monitoring systems. Services are primarily targeted at small and medium-sized enterprises in the Stuttgart, Ulm, Esslingen, Göppingen, and Kirchheim unter Teck regions.

Differentiator

Problem solved

Functional benefit

Products and services

• Managed Antivirus (G Data)

Quantifiable outcome

• 95% success rate in removing negative Google reviews
• +1 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature5 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Gamma Communications (HFO/Gamma)coreTechnology or IntegrationZEK resells and implements Crown Centrex cloud PBX (a Gamma Communications/HFO product) as their primary telecommunications solution. Crown Centrex is hosted on German servers, offering over 150 PBX functions, automatic updates, and redundant German data center connectivity. ZEK provides migration strategy and implementation for customers switching to cloud telephony.
• Ubiquiti (UniFi)coreTechnology or IntegrationUbiquiti's UniFi product line is ZEK's preferred solution for network components in KMU and Mittelstand customer deployments. Used for WLAN solutions, network planning, and structured cabling projects.
• SecurepointcoreTechnology or IntegrationSecurepoint is ZEK's chosen firewall and IT security provider. The German-owned manufacturer (since 1997) develops UTM firewall solutions with 'No Backdoors' philosophy. ZEK implements Securepoint NextGen UTM Firewall V12 for customers, featuring ransomware protection, SSL VPN, dual antivirus scanners (Cyren AV & ClamAV), and Geo-IP blocking.
• G Data CyberDefense AGcoreTechnology or IntegrationG Data is ZEK's managed antivirus partner. ZEK offers G Data as 'Managed Enterprise Security (MES)' — ZEK hosts the management server on German infrastructure, distributes updates, licensing, and new technologies centrally. G Data holds the 'Cybersecurity Made in Europe' seal from ECSO. ZEK's own infrastructure is also protected by G Data.
• RiverbirdcoreTechnology or IntegrationRiverbird is ZEK's IT monitoring platform — a modern solution developed entirely in Germany for SME requirements. Integrated with DocBee ticketing and SAP Systemhaus.one. Monitors backup status, patches, antivirus, disk health, services, and system utilization.
• DocBeecoreTechnology or IntegrationDocBee is ZEK's modern ticket and service management platform, specifically developed for IT system houses. ZEK transitioned to DocBee on 19 December 2025 for faster, more transparent customer support. Integrates with SAP Systemhaus.one and Riverbird.
• SAP Systemhaus.onecoreTechnology or IntegrationSAP Systemhaus.one is ZEK's ERP/business management system. Integrated with DocBee ticketing and Riverbird monitoring platforms for seamless operations.
• VEEAMcoreTechnology or IntegrationVEEAM is ZEK's backup solution partner. ZEK recommends a hybrid approach combining local VEEAM backup with VEEAM Cloud Backup. VEEAM supports physical, virtual, SaaS, hybrid-cloud, and multi-cloud environments. ZEK offers consultation and strategy development for backup concepts.
• MultimaticminorChannel Partner/ Reseller/ DistributorMultimatic is ZEK's partner for UPS systems. ZEK recommends Multimatic Online Double Conversion (Dauerwandler) units with 'EDELSTROM' branding, positioned as the best balance of quality and cost.
• Specialized Cabling Partner CompaniesminorImplementation/ SI/ Consulting PartnerZEK works with two specialized partner companies for structured cabling projects, particularly for larger or complex cabling projects within firmennetzwerk (company network) implementations.
• Kirchheim KnightsminorOthersZEK is a team partner (since 2021) of the Kirchheim Knights, a 2nd Basketball Bundesliga team. The team reached playoffs in 2023/2024 (6th place). ZEK continues as partner for the 2025/2026 season.
• Metzingen OpenminorOthersZEK is a junior partner for the Metzingen Open ITF tennis tournament ($30,000 prize money, 21-27 July 2025). ZEK supports local youth players as well as international experienced competitors.
• VfL Kirchheim Handball B-JugendminorOthersZEK sponsors the VfL Kirchheim Handball B-Jugend team, which finished as Bezirksliga vice-champion in the 2023/2024 season and participated in the Easter international tournament in Kolding, Denmark.
• TSV Jesingen Tennis Ladies 30minorOthersZEK sponsors the Ladies 30 tennis team of TSV Jesingen's tennis department (TA), providing new jerseys for the 2023/2024 summer season.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• SVA System Vertrieb Alexander GmbH: Mid-sized German IT system house founded in 1997, headquartered in Wiesbaden, with strong enterprise and SMB coverage across data center, security, and managed services. SVA is a closer size-and-model match for ZEK as an independent, vendor-agnostic German system house.
• Krämer IT GmbH: German IT system house focused on SMBs in the Mittelstand segment, offering managed services, security, and infrastructure. Comparable to ZEK in target customer profile and vendor-independent IT service model.
• NetGo GmbH: German IT services provider focused on SMBs and Mittelstand with managed services, cloud, security, and infrastructure offerings. Comparable to ZEK in regional-system-house positioning and full-stack SMB IT service delivery.
• GWS Netzwerk GmbH: Smaller regional German IT system house focused on SMB networking, security, and infrastructure services. Directly comparable to ZEK as a regional vendor-agnostic system house for Mittelstand customers.

Broad incumbents

• Allgeier SE: German IT services group with enterprise and SMB coverage through multiple subsidiaries. Comparable to ZEK in vendor-independent system-house positioning, but operates at much larger scale and serves national markets.
• DATAGROUP SE: German IT services provider specializing in managed services and IT outsourcing for SMB and enterprise customers. Comparable to ZEK in managed-service orientation, though operates at a much larger scale with national reach.
• Computacenter plc: Large European IT services and infrastructure provider with significant German operations. Comparable to ZEK in core IT service categories (security, infrastructure, managed services) but operates at enterprise scale across multiple geographies.
• Sopra Steria SE (Germany): European IT services group with German operations focused on enterprise digital transformation, infrastructure, and managed services. Comparable in service categories to ZEK but at substantially larger scale and enterprise customer focus.
• Bechtle AG: One of the largest IT system houses in Germany, headquartered near Heilbronn, with deep SMB and Mittelstand coverage across Baden-Württemberg and nationwide. Bechtle is comparable to ZEK as a manufacturer-independent IT system house, but operates at vastly larger scale with full portfolio breadth.

Others

• AVM GmbH: German networking/communications vendor (Fritz!Box) widely resold and supported by German SMB system houses. Comparable to ZEK as part of the same German SMB IT ecosystem, though operating as a product vendor rather than a system house.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZEK system house